TREM2 and mesothelioma: We also analyzed the relevance of tumor stage, and found that TREM2 expression significantly correlated with tumor stage in thirteen types of cancer, including BLCA, BRCA, COAD, ESCA, KICH, KIRC, KIRP, LUAD, mesothelioma (MESO), READ, STAD, testicular germ cell tumors (TGCT), and THCA (Supplementary Figure 1).